monkey_patch_sync.coffee

do (Backbone) ->
  _sync = Backbone.sync  

  Backbone.sync = (method, entity, options = {}) ->
    _.defaults options,
      beforeSend: _.bind(methods.beforeSend,  entity)
      complete:   _.bind(methods.complete,    entity)

    sync = _sync(method, entity, options)
    if !entity._fetch and method is "read"
      entity._fetch = sync
    sync

  methods =
    beforeSend: ->
      @trigger "sync:start", @

    complete: ->
      @trigger "sync:stop", @
      

  App.commands.setHandler "when:fetched", (entities, callback) ->
    throw new Error("Callback required") unless callback
    xhrs = _.chain([entities]).flatten().pluck("_fetch").value()
    $.when(xhrs...).done(callback)

App.request "when:fetched", [userCollection, otherCollection] ->
  region.show(new UserView({collection: userCollection}))